Boot Flash Drive on Internal USB Header vs Rear IO Panel

[Iceman24]

I was all set to install my USB 2 flash drive on a internal header that gives me a USB 2 port (it itself is plugged into USB 2 header), but then reading

Quote

Avoid using front panel USB ports in favor of ports available directly on the motherboard I/O panel.

on the Getting Started page gives me second thoughts, despite hearing that putting it inside was safer as it won't stick out. I know a 6" header adapter isn't a front port, but that is how a front port connects, so what's truly the best way to do it? I want to do it that way. Thanks.

[Squid]

I use these

 

https://www.ebay.ca/itm/Internal-Header-Adapter-2-Ports-A-USB2-0-Female-9Pin-Motherboard-to-Double-Layer/323877364954?epid=13012681081&hash=item4b689864da:g:VaAAAOSw7Excf5Cn

[Iceman24]

I bought the StarTech one popular on Amazon, works fine, but after reading the official documentation, it made me wonder why they recommend using motherboard rear IO panel ports.